| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.sshd.common; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| /** |
| * A named optional factory. |
| * |
| * @param <T> The create object instance type |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| public interface BuiltinFactory<T> extends NamedFactory<T>, OptionalFeature { |
| |
| // CHECKSTYLE:OFF |
| final class Utils { |
| // CHECKSTYLE:ON |
| |
| private Utils() { |
| throw new UnsupportedOperationException("No instance allowed"); |
| } |
| |
| public static <T, E extends BuiltinFactory<T>> List<NamedFactory<T>> setUpFactories( |
| boolean ignoreUnsupported, Collection<? extends E> preferred) { |
| List<NamedFactory<T>> avail = new ArrayList<>(preferred.size()); |
| for (E f : preferred) { |
| if (ignoreUnsupported || f.isSupported()) { |
| avail.add(f); |
| } |
| } |
| return avail; |
| } |
| } |
| } |